Recording medium and information reproduction method for reproducing management information from the information recording medium

• US 7,903,516 B2
• Filed: 01/05/2009
• Issued: 03/08/2011
• Est. Priority Date: 03/22/2001
• Status: Expired due to Fees

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Fukushima, Toshiyuki, Ueda, Hiroshi, Ito, Motoshi
• Primary Examiner(s): HUBER, PAUL W
• Application Number:
  US12/348,400
• Publication Number:
  US 20090122679A1
• Time in Patent Office: 792 Days
• Field of Search: None
• US Class Current: 369/53.2
• CPC Class Codes: G11B 2220/218 Write-once discs
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/22 Means responsive to presence or absence of recorded information signals
• CPC Class Codes: G11B 27/24 by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: G11B 7/0045 Recording G11B7/006, G11B7/0065 take precedence
• CPC Class Codes: G11B 7/00745 Sectoring or header formats within a track formats in general G11B20/12

Abstract

A recording method for recording, on a write once type information recording medium, management information representing a recording state of the write once type information recording medium is provided. The information recording medium includes data including a first synchronization signal. The information recording medium has a second synchronization signal pre-recorded by cutting. The recording method includes the steps of (a) performing a recording operation for recording the management information at a predetermined position of the information recording medium based on the first synchronization signal; (b) determining whether the recording operation in step (a) is normally terminated or not; and (c) when the recording operation in step (a) is not normally terminated, performing a recording operation for recording the management information at the predetermined position of the information recording medium based on the second synchronization signal.

Claims

1. An information recording medium from which management information recorded on the information recording medium and representing a recording state of the information recording medium are reproduced by a reproduction method, wherein;

the information recording medium includes a management information area and a data area,

the management information area includes first management information representing a recording state of the information recording medium when user data is recorded in the information recording medium, and

a plurality of areas distributed in the data area includes second management information representing a recording state of the information recording medium regarding the user data, where the second management information has a duplicate of the first management information,

the reproduction method comprising the steps of;

(a) reproducing the first management information;

(b) specifying one of the plurality of areas based on the reproduced first management information; and

(c) reproducing the second management information recorded in the plurality of areas sequentially from the specified area toward rearward in the data areas.

2. A reproduction method for reproducing management information recorded on a write once type information recording medium and representing a recording state of the information recording medium, wherein:

the information recording medium includes a management information area and a data area,

the management information area includes first management information representing a recording state of the information recording medium when user data is recorded in the information recording medium, and

a plurality of areas distributed in the data area includes second management information representing a recording state of the information recording medium regarding the user data, where the second management information has a duplicate of the first management information,

the reproduction method comprising the steps of;

(a) reproducing the first management information;

(b) specifying one of the plurality of areas based on the reproduced first management information; and

(c) reproducing the second management information recorded in the plurality of areas sequentially from the specified area toward rearward in the data areas.

3. An information recording medium from which the management information are reproduced by the reproduction method according to claim 2.